import React            from 'react'
import PageTitle        from 'component/page-title/index.jsx'
import MUtil            from "util/mm.jsx";
import Product          from "service/product-service.jsx";
import CategorySelector from './category-selector.jsx';
import FileUploader     from 'util/file-uploader/index.jsx';
import RichEditor       from 'util/rich-editor/index.jsx';
import './save.scss';

let _mm = new MUtil();
let _product = new Product();
export default class ProductSave extends React.Component {
  constructor(props) {
    super(props);
    this.state= {
      id                : this.props.match.params.pid,
      name              : '',
      subtitle          : '', 
      categoryId        : 0,
      parentCategoryId  : 0,
      subImages         : [],
      price             : '',
      stock             : '',
      detail            : '',
      status            : 1,  // 商品状态1为在售
    }
  }
  // 简单字段的改变，商品名称，描述，价格，库存
  onValueChange(e) {
    let name  = e.target.name,
        value = e.target.value.trim();
    this.setState({
      [name] : value
    })
  }
  // 品类选择器变化
  onCategoryChange(categoryId, parentCategoryId) {
    this.setState({
      categoryId        : categoryId,
      parentCategoryId  : parentCategoryId,
    });
    // console.log('categoryId:' + categoryId)
    // console.log('parentCategoryId:' + parentCategoryId)
  }
  // 上传图片成功
  onUploadSuccess(res) {
    let subImages = this.state.subImages;

    subImages.push(res);
    this.setState({
        subImages : subImages
    });
  }
  // 上传图片失败
  onUploadError(errMsg) {
    _mm.errorTips(errMsg);
  }
  // 删除图片
  onImageDelete(e) {
    let index = parseInt(e.target.getAttribute('index')),
        subImages = this.state.subImages;

    subImages.splice(index, 1);
    this.setState({
      subImages: subImages
    })
  }
  // 富文本编辑器的变化
  onDetailValueChange(value) {
    this.setState({
      detail: value
    })
  }
  // 获取图片uri
  getSubImageString() {
    return this.state.subImages.map((image) => image.uri).join(',');
  }
  // 提交表单
  onSubmit() {
    let product = {
      name              : this.state.name,
      subtitle          : this.state.subtitle,
      categoryId        : parseInt(this.state.categoryId),
      subImages         : this.getSubImageString(),
      price             : parseFloat(this.state.price),
      stock             : parseInt(this.state.stock),
      detail            : this.state.detail,
      status            : this.state.status,
    },
    productCheckResult = _product.checkProduct(product);
    if (this.state.id) {
      product.id = this.state.id;
    }
   
    // 表单验证成功
    if(productCheckResult.status) {
      _product.saveProduct(product).then((res) => {
        _mm.successTips(res)
        this.props.history.push('/product/index');
      }, (errMsg) => {
        _mm.errorTips(errMsg)
      });
    }
    // 表单验证失败
    else {
      _mm.errorTips(productCheckResult.msg);
    }
  }
  // 加载商品详情
  loadProduct() {
    // 有id的时候，表示是编辑功能，需要表单回填
    if(this.state.id){
      _product.getProduct(this.state.id).then((res) => {
        let images = res.subImages.split(',');
        res.subImages = images.map((imgUri, index) => {
          return {
            uri: imgUri,
            url: res.imageHost + imgUri
          }
        });
        res.defaultDetail = res.detail;
        this.setState(res);
      }, (errMsg) => {
        _mm.errorTips(errMsg);
      })
    }
  }

  componentDidMount(){
    this.loadProduct();
  }
  render () {
    return (
      <div id="page-wrapper">
        <PageTitle title={this.state.id ? "编辑商品" : "添加商品"}></PageTitle>
        <div className="form-horizontal">
          <div className="form-group">
            <label className="col-md-2 control-label">商品名称</label>
            <div className="col-md-5">
              <input 
                type="text" 
                className="form-control"  
                placeholder="请输入商品名称"
                name="name"
                value={this.state.name}
                onChange={(e) => this.onValueChange(e)}
              />
            </div>
          </div>
          <div className="form-group">
            <label className="col-md-2 control-label">商品描述</label>
            <div className="col-md-5">
              <input 
                type="text" 
                className="form-control" 
                placeholder="请输入商品描述"
                name="subtitle"
                value={this.state.subtitle}
                onChange={(e) => this.onValueChange(e)}
              />
            </div>
          </div>
          <div className="form-group">
            <label className="col-md-2 control-label">所属分类</label>
            <CategorySelector 
              categoryId={this.state.categoryId}
              parentCategoryId={this.state.parentCategoryId}
              onCategoryChange={(categoryId, parentCategoryId) => {this.onCategoryChange(categoryId, parentCategoryId)}}
            ></CategorySelector>
          </div>
          <div className="form-group">
            <label className="col-md-2 control-label">商品价格</label>
            <div className="col-md-3">
              <div className="input-group">
                <input 
                  type="number" 
                  className="form-control" 
                  placeholder="价格"
                  name="price"
                  value={this.state.price}
                  onChange={(e) => this.onValueChange(e)}
                />
                <span className="input-group-addon">元</span>
              </div>
            </div>
          </div>
          <div className="form-group">
            <label className="col-md-2 control-label">商品库存</label>
            <div className="col-md-3">
              <div className="input-group">
                <input 
                  type="number" 
                  className="form-control" 
                  placeholder="库存"
                  name="stock"
                  value={this.state.stock}
                  onChange={(e) => this.onValueChange(e)}
                />
                <span className="input-group-addon">件</span>
              </div>
            </div>
          </div>
          <div className="form-group">
            <label className="col-md-2 control-label">商品图片</label>
            <div className="col-md-10">
              {
                this.state.subImages.length 
                ? this.state.subImages.map((image, index) => (
                  <div key={index} className="img-con">
                    <img className="img" src={image.url} />
                    <i  className="fa fa-close" 
                        onClick={(e) => this.onImageDelete(e)}
                        index={index}
                    ></i>
                  </div>
                  )) 
                : (<div>请上传图片</div>)
              }
            </div>
            <div className="col-md-offset-2 col-md-10 file-upload-con">
              <FileUploader 
                onSuccess={(res) => this.onUploadSuccess(res)}
                onError={(errMsg) => this.onUploadError(errMsg)}
              />
            </div>
          </div>
          <div className="form-group">
            <label className="col-md-2 control-label">商品详情</label>
            <div className="col-md-10">
              <RichEditor 
                detail={this.state.detail} 
                defaultDetail={this.state.defaultDetail} 
                onValueChange={(value) => this.onDetailValueChange(value)}></RichEditor>
            </div>
          </div>
          <div className="form-group">
            <div className="col-sm-offset-2 col-sm-10">
              <button 
                type="submit" 
                className="btn btn-primary" 
                onClick={(e) => this.onSubmit(e)}
              >提交</button>
            </div>
          </div>
        </div>
      </div>
    );
  }
}